POPULAR FLORA. 



203 



CLASS II. — ENDOGENS OR MONOCOTYLEDONS. 



Stem having the wood in threads or bundles, interspersed among the pith or 

 cellular part, not forming a ring or layer, and not increasing by annual layers. 



Leaves parallel-veined, not branching and forming meshes of netvi^ork. To this 

 some Arums, Trillium, Greenbrier, &c. are exceptions, having more or less netted 

 veins. 



500 Entlojenoiis stem nCone year old, shown in a Corn-stalk. S"! One oT several veara old. of Palmetto. 

 Parallel-veinerl leaves of the two kinds : 502 Ihnt of Lily of the Valley ; 503. one of^Calla 504. Majnifiea 

 section of the seed of Iris, showing the small monocotyledonuus embryo. 505. Flanllet of Iria growinir from 

 the seed. • = .< / 6 5 



Flowers with their parts mostly three or six, never five. 



Embryo monocotyledonous, i. e. of only one true seed-leaf: so in 

 germination the leaves are all alternate or one above another. 



Except the Palmetto and one or two Yuccas at the South (Fig. 

 79), and some Greenbriers, all the Endogens of this country are herbs. ^"^ 



In warmer climates there are many Palms and other woody plants of the class, all 

 having an appearance very different from our common trees and shrubs (113, 114). 



14 



